AttributeError: 'module' object has no attribute 'create_default_context'

MyLap-MBP:~ sh$ jupyter notebook
Traceback (most recent call last):
File "/anaconda2/bin/jupyter-notebook", line 7, in
from notebook.notebookapp import main
File "/anaconda2/lib/python2.7/site-packages/notebook/notebookapp.py", line 60, in
from tornado import httpserver
File "/anaconda2/lib/python2.7/site-packages/tornado/httpserver.py", line 33, in
from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
File "/anaconda2/lib/python2.7/site-packages/tornado/http1connection.py", line 30, in
from tornado import iostream
File "/anaconda2/lib/python2.7/site-packages/tornado/iostream.py", line 40, in
from tornado.netutil import ssl_wrap_socket, _client_ssl_defaults, _server_ssl_defaults
File "/anaconda2/lib/python2.7/site-packages/tornado/netutil.py", line 44, in
_client_ssl_defaults = ssl.create_default_context(
AttributeError: 'module' object has no attribute 'create_default_context'
MyLap-MBP:~ sh$

export PATH="/usr/local/opt/jpeg-turbo/bin:$PATH"
MyLap-MBP:~ sh$ /anaconda2/bin/jupyter_mac.command ; exit;
Traceback (most recent call last):
File "/anaconda2/bin/jupyter-notebook", line 7, in
from notebook.notebookapp import main
File "/anaconda2/lib/python2.7/site-packages/notebook/notebookapp.py", line 60, in
from tornado import httpserver
File "/anaconda2/lib/python2.7/site-packages/tornado/httpserver.py", line 33, in
from tornado.http1connection import HTTP1ServerConnection, HTTP1ConnectionParameters
File "/anaconda2/lib/python2.7/site-packages/tornado/http1connection.py", line 30, in
from tornado import iostream
File "/anaconda2/lib/python2.7/site-packages/tornado/iostream.py", line 40, in
from tornado.netutil import ssl_wrap_socket, _client_ssl_defaults, _server_ssl_defaults
File "/anaconda2/lib/python2.7/site-packages/tornado/netutil.py", line 44, in
_client_ssl_defaults = ssl.create_default_context(
AttributeError: 'module' object has no attribute 'create_default_context'
logout
Saving session...completed.

[Process completed]

Reproduce the failure by running the mentioned jupyter notebook entry point in the reported Anaconda Python 2.7 environment, then trace imports through notebook/notebookapp.py and tornado/netutil.py. Done means the notebook command starts without the reported AttributeError.

Written by the indexing model from the issue text.